Angelic Cub {1}{W}
Creature — Cat Angel
Whenever this creature becomes the target of a spell or ability for the first time each turn, put a +1/+1 counter on it.
As long as this creature has three or more +1/+1 counters on it, it has flying.
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Cards that do something similar expected a card that isn't here?
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Seedglaive Mentor 99%
$0.19#10879
"Whenever this creature becomes the target of a spell or ability you control for the first time each turn, put a +1/+1 counter on it."
Heartfire Hero 99%
$0.25#7667
"Whenever this creature becomes the target of a spell or ability you control for the first time each turn, put a +1/+1 counter on it."
Skyknight Squire 96%
$0.33#5281
"As long as this creature has three or more +1/+1 counters on it, it has flying and is a Knight in addition to its other types."
Mossdog 92%
$0.15#27596
"Whenever this creature becomes the target of a spell or ability an opponent controls, put a +1/+1 counter on this creature."
Sage of Hours 84%
$12.39#7802
"Whenever you cast a spell that targets this creature, put a +1/+1 counter on it."
Bloodcrazed Hoplite 84%
$0.09#25828
"Whenever you cast a spell that targets this creature, put a +1/+1 counter on it."
Lagonna-Band Trailblazer 84%
$0.17#20778
"Whenever you cast a spell that targets this creature, put a +1/+1 counter on it."
Fabled Hero 84%
$0.30#18364
"Whenever you cast a spell that targets this creature, put a +1/+1 counter on it."
Voice of the Blessed 84%
$2.29#3225
"As long as this creature has four or more +1/+1 counters on it, it has flying and vigilance."
+1 more matching line
Snapping Sailback 82%
$0.22#14168
"Whenever this creature is dealt damage, put a +1/+1 counter on it."
Satyr Hoplite 81%
$0.17#20684
"Whenever you cast a spell that targets this creature, put a +1/+1 counter on this creature."
Wingsteed Rider 81%
$0.11#22489
"Whenever you cast a spell that targets this creature, put a +1/+1 counter on this creature."
Dawnbringer Charioteers 81%
$0.26#21872
"Whenever you cast a spell that targets this creature, put a +1/+1 counter on this creature."
War-Wing Siren 81%
$0.07#27771
"Whenever you cast a spell that targets this creature, put a +1/+1 counter on this creature."
Hero of Iroas 81%
$1.24#7023
"Whenever you cast a spell that targets this creature, put a +1/+1 counter on this creature."